Stellite® 6 wire (UNS R30006) is used as a hardfacing filler to deposit a cobalt-chromium-tungsten wear layer by TIG, MIG or oxy-acetylene welding. The deposit resists abrasion, galling and cavitation to about 500 °C at a typical 36–45 HRC, so a base component in steel or stainless can be given a Stellite 6 running surface exactly where it wears. It is the most widely applied hardfacing grade for valve seats, tool edges and erosion faces.
Equivalent Grades & Standards
| Property | Value |
|---|---|
| UNS number | R30006 |
| Density | 8.44 g/cm3 |
| Melting range | 1250-1360 °C |
Identifiers and physical constants for Stellite 6. A dash means no such designation is published for this grade.
Chemical Composition
| Element | Min (%) | Max (%) |
|---|---|---|
| Cobalt (Co) | — | Balance |
| Chromium (Cr) | 27 | 32 |
| Tungsten (W) | 3 | 6 |
| Carbon (C) | 0.9 | 1.4 |
Composition limits for Stellite 6. These are specification limits for the grade, not measured values for a lot; the mill test certificate supplied with your order states the actual analysis.
Applications & Benefits
- Weld overlay of valve seats, gates and seal faces on steel and stainless bodies.
- Hardfacing of tool edges, erosion shields and rolling couples.
- Repair and rebuild of worn wear surfaces to original dimension.
- TIG, MIG and oxy-acetylene deposition; supplied spooled or in cut lengths.
Supplied ex-stock from Mumbai with EN 10204 3.1 mill test certificates and export packaging. Contact us for diameters, spool sizes and pricing, or see all Stellite 6 forms.